851318253606 has 32 divisors (see below), whose sum is σ = 1798627132800. Its totient is φ = 267880616640.

The previous prime is 851318253601. The next prime is 851318253631. The reversal of 851318253606 is 606352813158.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851318253601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13255696 + ... + 13319763.

It is an arithmetic number, because the mean of its divisors is an integer number (56207097900).

Almost surely, 2^851318253606 is an apocalyptic number.

851318253606 is an abundant number, since it is smaller than the sum of its proper divisors (947308879194).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

851318253606 is a wasteful number, since it uses less digits than its factorization.

851318253606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26575764.

The product of its (nonzero) digits is 1036800, while the sum is 48.

The spelling of 851318253606 in words is "eight hundred fifty-one billion, three hundred eighteen million, two hundred fifty-three thousand, six hundred six".